void ReqQueryMaxOrderVolume()
{
ThostFtdcQueryMaxOrderVolumeField req = new ThostFtdcQueryMaxOrderVolumeField();
req.BrokerID = BROKER_ID;
req.InvestorID = INVESTOR_ID;
req.InstrumentID = INSTRUMENT_ID;
req.Direction = EnumDirectionType.Buy;
req.HedgeFlag = EnumHedgeFlagType.Speculation;
int iResult = api.ReqQueryMaxOrderVolume(req, ++iRequestID);
Console.WriteLine("--->>> 查询最大报单数量请求: " + ((iResult == 0) ? "成功" : "失败"));
}